EP0996601A1 - Materiau refractaire a base de corindon de chrome, pierre en corindon de chrome et utilisation de celle-ci - Google Patents

Materiau refractaire a base de corindon de chrome, pierre en corindon de chrome et utilisation de celle-ci

Info

Publication number
EP0996601A1
EP0996601A1 EP98937469A EP98937469A EP0996601A1 EP 0996601 A1 EP0996601 A1 EP 0996601A1 EP 98937469 A EP98937469 A EP 98937469A EP 98937469 A EP98937469 A EP 98937469A EP 0996601 A1 EP0996601 A1 EP 0996601A1
Authority
EP
European Patent Office
Prior art keywords
corundum
refractory material
chrome
grain size
stone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98937469A
Other languages
German (de)
English (en)
Other versions
EP0996601B1 (fr
Inventor
Karl-Heinz Mossal
Selim Yesiltas
Albert Kleinevoss
Thomas Weichert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Didier Werke AG
Original Assignee
Didier Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7834207&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0996601(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Didier Werke AG filed Critical Didier Werke AG
Priority to SI9830037T priority Critical patent/SI0996601T1/xx
Publication of EP0996601A1 publication Critical patent/EP0996601A1/fr
Application granted granted Critical
Publication of EP0996601B1 publication Critical patent/EP0996601B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore

Definitions

  • the invention relates to a refractory material based on chromium corundum, a chromium corundum stone made from this material and the use thereof.
  • EP 0 242 769 A2 describes a dense ceramic stone which can consist of 10 to 90% by weight of Al 2 O 3 , 90 to 10% by weight of Cr 2 O 3 and 0 to 40% by weight of ZrO 2 , where the stone should have a density of at least 92% of its theoretical density. Accordingly, the oxides mentioned are used only in a very fine grain fraction ( ⁇ 50 ⁇ m). These stones are used, among other things, in glass melting furnaces.
  • the known stones are relatively brittle due to their high density and show unsatisfactory corrosion behavior, especially at higher application temperatures (above 1,500 ° C).
  • the invention is based on the object of offering a refractory material and an associated stone which are suitable for use in slag-carrying furnaces with high thermal cycling and high operating temperatures (up to 1,650 ° C.). The greatest possible structural elasticity is also sought.
  • the invention has recognized that materials based on chromium corundum can meet these requirements. To do this, it is necessary to adjust the proportions of chromium oxide and corundum as well as the grain size of the raw materials selected. In its most general embodiment, the invention then relates to a refractory material based on chromium corundum mi:
  • Such a material based on chromium corundum can be processed into stones with a high structural elasticity, which are suitable for the named fields of application, for example rotary kilns for the incineration of hazardous waste up to 1,700 ° C application temperatures.
  • the chromium oxide content should be as fine as possible, which is why, according to one embodiment, a grain size ⁇ 0.05 mm ( ⁇ 50 ⁇ m) is proposed.
  • the stated proportion of zirconium dioxide can essentially consist of baddeleyite, whereby appropriate medium to coarse-grained baddeleyite raw materials can be used as baddeleyite carriers, for example sintered zirconium mullite, fused zirconium mullite, sintered zirconium corundum and fused zirconium corundum, individually or in a mixture.
  • the Zr0 2 content significantly influences the elasticity of the structure and thus the resistance to temperature changes.
  • the corresponding corundum component must be included in the abovementioned corundum component (55 to 94% by weight of the total mixture).
  • the refractory material can have a proportion of SiO 2 ⁇ 3% by weight.
  • Mullite for example, can be used as the raw material for this SiO 2 component.
  • the zirconium mullite mentioned is used as a Zr0 2 raw material, it also applies here that the mullite content, if appropriate in part, can be included in the Si0 component.
  • the corundum matrix consists, for example, of sintered corundum, fused corundum or mixtures thereof.
  • the refractory material mentioned can be processed into stones.
  • the stones can be pressed or pounded. They are fired at temperatures between 1,450 and 1,700 ° C.
  • Zr0 2 and AI2O3 and, if necessary Si0 7 and Fe 2 ⁇ 3 (the proportion of Fe 2 0 3 should be ⁇ 0.5% by weight) and finally compliance with the above-mentioned grain sizes for the individual material components can be a chrome corundum stone after fire at 1,450 to 1,700 ° C, which has an open porosity between 9 and 18 vol .-% and an elastic modulus ⁇ 30,000 N / mm 2 .
  • the modulus of elasticity can be reduced to values of up to 15,000 N / mm 2 by appropriately setting the aforementioned parameters.
  • the temperature change stress (measured according to DIN EN 993, part 11) gives a value> 30.
  • the chrome corundum stone as described above, can advantageously be used in rotary kilns for waste incineration, in particular hazardous waste incineration. It is resistant up to temperatures of 1,700 ° without losing its high structural elasticity and its excellent corrosion behavior.
  • a reference sample according to the prior art was selected as offset No. 1.
  • Batch No. 1 consists of 82% by weight of corundum with a grain size of 0.2 to 3 mm, 8% by weight of calcined alumina of the same grain size and 10% by weight of chromium oxide green.
  • the batch No. 2 according to the invention consists of 70% by weight of corundum with a grain size of 0.2 to 3 mm, 10% by weight of calcined alumina of the same grain size, 10% by weight of zirconium mullite with a grain size of 1.6 to 3.2 mm and 10% by weight of chrome oxide green ⁇ 45 ⁇ m.
  • the batch No. 3 consists of 70% by weight of corundum with a grain size of 0.2 to 3 mm, 10% by weight of calcined alumina of the same size, 10% by weight of baddeleyite (Zr0 2 ) with a size of 0.5 to 2 , 5 mm and 10% by weight of chrome oxide green ⁇ 45 ⁇ m.
  • the open porosity of the stones was 15.4% by volume in reference sample 1, 17.6% by volume in sample No. 2 and 16.3% by volume in sample No. 3.
  • the cold compressive strength was determined for sample No. 1 with 313 N / mm 2 , for sample No. 2 with 98 N / mm 2 and for sample No. 3 with 166 N / mm 2 .
  • the modulus of elasticity was 79,900 N / mm 2 for reference stone No. 1 and 22,356 and 28,200 N / mm 2 for stones 2 and 3 according to the invention.
  • the temperature change resistance determined according to DIN EN 993, Part 11 with water was 4 cycles for reference stone No. 1, 32 cycles for stone according to offset No. 2 and 31 cycles for stone with offset No. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

L'invention concerne un matériau réfractaire à base de corindon de chrome, une pierre en corindon de chrome fabriquée à partir de ce matériau, ainsi que son utilisation.
EP98937469A 1997-07-01 1998-06-10 Materiau refractaire a base de corindon de chrome, pierre en corindon de chrome et utilisation de celle-ci Expired - Lifetime EP0996601B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830037T SI0996601T1 (en) 1997-07-01 1998-06-10 Refractory, chrome-alumina-based material, chrome-alumina brick and use of the brick

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19727917A DE19727917C1 (de) 1997-07-01 1997-07-01 Feuerfester Versatz auf Basis Chromoxid/Aluminiumoxid und dessen Verwendung
DE19727917 1997-07-01
PCT/EP1998/003513 WO1999001399A1 (fr) 1997-07-01 1998-06-10 Materiau refractaire a base de corindon de chrome, pierre en corindon de chrome et utilisation de celle-ci

Publications (2)

Publication Number Publication Date
EP0996601A1 true EP0996601A1 (fr) 2000-05-03
EP0996601B1 EP0996601B1 (fr) 2001-05-09

Family

ID=7834207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98937469A Expired - Lifetime EP0996601B1 (fr) 1997-07-01 1998-06-10 Materiau refractaire a base de corindon de chrome, pierre en corindon de chrome et utilisation de celle-ci

Country Status (12)

Country Link
US (1) US6352951B1 (fr)
EP (1) EP0996601B1 (fr)
AT (1) ATE201012T1 (fr)
AU (1) AU725355B2 (fr)
CZ (1) CZ294644B6 (fr)
DE (2) DE19727917C1 (fr)
DK (1) DK0996601T3 (fr)
ES (1) ES2158687T3 (fr)
HU (1) HU224456B1 (fr)
SK (1) SK283009B6 (fr)
WO (1) WO1999001399A1 (fr)
ZA (1) ZA984380B (fr)

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DE10160366C2 (de) 2001-12-08 2003-10-02 Refractory Intellectual Prop Gebranntes feuerfestes keramisches Formteil, seine Verwendung und Versatz zur Herstellung des Formteils
US8173564B2 (en) * 2005-03-15 2012-05-08 Saint-Gobain Centre De Recherches Et D'etudes Europeen Gasifier reactor internal coating
DE102005036394B4 (de) * 2005-08-03 2008-07-24 Tu Bergakademie Freiberg Verfahren zur Herstellung eines thermoschock- und korrosionsbeständigen Keramikwerkstoffes auf der Basis eines zirkondioxidfreien feuerfesten Oxides
FR2918659B1 (fr) * 2007-07-11 2011-11-11 Saint Gobain Ct Recherches Produit fritte a base d'alumine et d'oxyde de chrome.
KR101843215B1 (ko) * 2010-08-10 2018-03-28 생-고뱅 생트레 드 레체르체 에 데투드 유로삐엔 크롬 옥사이드 내화 재료
FR2963785A1 (fr) * 2010-08-10 2012-02-17 Saint Gobain Ct Recherches Poudre a base d'oxyde de chrome
FR2974081B1 (fr) * 2011-04-15 2016-02-26 Saint Gobain Ct Recherches Produit d'oxydes de chrome, de zirconium et d'hafnium
JP5626418B1 (ja) * 2013-06-21 2014-11-19 三菱マテリアル株式会社 リサイクル原料の処理方法
EP2848128A1 (fr) 2013-09-13 2015-03-18 Bunge Global Innovation, LLC. Nouveau procédé de préparation de fraction de farine de tournesol à forte teneur en protéines
CN107759237A (zh) * 2017-10-12 2018-03-06 徐州东鹏工具制造有限公司 一种电熔锆刚玉的热加工方法
CN107739199B (zh) * 2017-11-02 2020-09-01 武汉理工大学 一种耐高温抗热震太阳能热发电堇青石-莫来石-刚玉复合陶瓷输热管道及其制备方法
CN108409924A (zh) * 2018-03-20 2018-08-17 长沙小新新能源科技有限公司 一种蓄电池壳体材料及其制备方法
CN109265150B (zh) * 2018-10-15 2021-06-29 郑州市瑞沃耐火材料有限公司 加热炉用预制滑轨砖
CN110511004A (zh) * 2019-09-04 2019-11-29 郑州瑞泰耐火科技有限公司 一种锌尾渣处理用特种铬刚玉砖及其制备方法
CN110511000B (zh) * 2019-09-30 2022-03-25 瑞泰马钢新材料科技有限公司 一种rh炉上部槽用方镁石-铬刚玉砖及其制备方法
CN113121212A (zh) * 2019-12-30 2021-07-16 营口升辉瑞富耐火材料有限公司 一种炼铜炉用铝铬固溶体砖及制造方法
CN111423222A (zh) * 2020-03-23 2020-07-17 锦州集信高温材料有限公司 一种抗还原反应、抗热震的有色金属冶炼烟化炉或侧吹炉用铬刚玉砖的生产方法
CN112374873B (zh) * 2020-11-17 2022-07-26 宜兴瑞泰耐火材料工程有限公司 一种复合铬刚玉砖及其制备工艺
CN112745110A (zh) * 2020-12-07 2021-05-04 北京金隅通达耐火技术有限公司 一种危险废物处置回转窑用高致密锆刚玉砖
CN112745108A (zh) * 2020-12-07 2021-05-04 北京金隅通达耐火技术有限公司 一种危险废物处置回转窑用高致密铬刚玉砖
CN112745111A (zh) * 2020-12-07 2021-05-04 北京金隅通达耐火技术有限公司 一种危险废物处置回转窑用高致密铬锆刚玉砖
CN112408965A (zh) * 2020-12-30 2021-02-26 巩义市新科耐火材料有限公司 一种焚烧炉用耐酸砖及其制备方法
CN112745109A (zh) * 2020-12-30 2021-05-04 巩义市新科耐火材料有限公司 一种高温抗剥落铬刚玉砖的生产方法
CN113979760B (zh) * 2021-11-16 2022-11-15 宜兴市海科耐火材料制品有限公司 一种用于危废气化熔融炉的高热震铬刚玉砖的制备方法
CN114085071A (zh) * 2021-12-15 2022-02-25 无锡远能耐火材料有限公司 高温等离子熔融炉内衬用的高铬刚玉耐火砖及其制备方法
CN115572156A (zh) * 2022-09-29 2023-01-06 浙江自立高温科技股份有限公司 一种钢水不浸润的铝硅铬质透气元件及其制备方法
CN115611617B (zh) * 2022-10-18 2023-09-01 新疆八一钢铁股份有限公司 欧冶炉气化炉用耐火材料配制工艺及其耐材配制系统
CN115626831A (zh) * 2022-10-24 2023-01-20 宜兴兴贝耐火材料制品有限公司 一种高耐磨性锆铬基刚玉耐火可塑料及其制备方法
CN115557675B (zh) * 2022-11-04 2023-11-21 湖北瑞信养生用品科技有限公司 一种用于玻璃生产的改性石墨复合陶瓷料槽及其制备方法
CN116102343B (zh) * 2023-02-09 2023-11-17 宜兴市金其节能科技有限公司 危废焚烧系统回转窑用耐酸耐盐改性刚玉砖及制备方法
CN117003555A (zh) * 2023-08-09 2023-11-07 中钢集团洛阳耐火材料研究院有限公司 一种危险废弃物焚烧装置用含二铝酸钙的铬刚玉浇注料
CN117362015B (zh) * 2023-10-27 2024-04-12 河南省瑞泰科实业集团有限公司 高纯刚玉砖及其制备方法

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Also Published As

Publication number Publication date
SK173899A3 (en) 2000-10-09
DK0996601T3 (da) 2001-08-27
HU224456B1 (hu) 2005-09-28
ZA984380B (en) 1998-12-02
ATE201012T1 (de) 2001-05-15
HUP0100571A2 (hu) 2001-06-28
HUP0100571A3 (en) 2004-04-28
EP0996601B1 (fr) 2001-05-09
DE59800697D1 (de) 2001-06-13
WO1999001399A1 (fr) 1999-01-14
US6352951B1 (en) 2002-03-05
AU725355B2 (en) 2000-10-12
DE19727917C1 (de) 1999-02-25
ES2158687T3 (es) 2001-09-01
SK283009B6 (sk) 2003-01-09
CZ294644B6 (cs) 2005-02-16
CZ9904521A3 (cs) 2001-07-11
AU8625998A (en) 1999-01-25

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